The church in Bû
Location of Bû
Coordinates: 48°47′50″N 1°29′47″E / 48.7972°N 1.4964°E / 48.7972; 1.4964
CountryFrance
RegionCentre-Val de Loire
DepartmentEure-et-Loir
ArrondissementDreux
CantonAnet
IntercommunalityCA Pays de Dreux
Government
 • Mayor (2020–2026) Pierre Sanier
Area
1
22.6 km2 (8.7 sq mi)
Population
 (2023)
2,077
 • Density91.9/km2 (238/sq mi)
Time zoneUTC+01:00 (CET)
 • Summer (DST)UTC+02:00 (CEST)
INSEE/Postal code
28064 /28410
Elevation89–141 m (292–463 ft)
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

(French pronunciation: [by]) is a commune in the Eure-et-Loir department in northern France.